1890058813 has 2 divisors, whose sum is σ = 1890058814. Its totient is φ = 1890058812.

The previous prime is 1890058783. The next prime is 1890058853. The reversal of 1890058813 is 3188500981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1753683129 + 136375684 = 41877^2 + 11678^2 .

It is a cyclic number.

It is not a de Polignac number, because 1890058813 - 2²¹ = 1887961661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1890058813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1890058853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 945029406 + 945029407.

It is an arithmetic number, because the mean of its divisors is an integer number (945029407).

Almost surely, 2^1890058813 is an apocalyptic number.

It is an amenable number.

1890058813 is a deficient number, since it is larger than the sum of its proper divisors (1).

1890058813 is an equidigital number, since it uses as much as digits as its factorization.

1890058813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 43.

The square root of 1890058813 is about 43474.8066470686. The cubic root of 1890058813 is about 1236.3984144208.

The spelling of 1890058813 in words is "one billion, eight hundred ninety million, fifty-eight thousand, eight hundred thirteen".